[Recommendations for the specialist further training of nursing personnel on intensive care units in the treatment of abdominal aortic aneurysms: results of a modified Delphi procedure with experts]. / Empfehlungen zur Fachweiterbildung von Pflegefachpersonen der Intensivstation bei der Behandlung des Bauchaortenaneurysmas: Ergebnisse eines modifizierten Delphi-Verfahrens mit Expert:innen.

INTRODUCTION: The medical development in the previous 15 years and the changes in treatment reality of the comprehensive elective treatment of abdominal aortic aneurysms necessitate a re-evaluation of the quality assurance guidelines of the Federal Joint Committee in Germany (QBAA-RL). In the current version this requires a specialist further training quota for nursing personnel in intensive care wards of 50%. The quota was determined in 2008 based on expert opinions, although a direct empirical evidence base for this does not exist. METHODS: Representatives from the fields of patient representation, physicians, nursing personnel and other relevant interface areas were invited to participate in a modified Delphi procedure. Following a comprehensive narrative literature search, a survey and focus group discussions with national and international experts, a total of three anonymized online-based voting rounds were carried out for which previously determined key statements were assessed with a 4­point Likert scale (totally disagree up to totally agree). In addition, the expert panel had also defined a recommendation for a minimum quota for the specialist training of nursing personnel on intensive care wards in the treatment of abdominal aortic aneurysms, whereby an a priori agreement of 80% of the participants was defined as the consensus limit. RESULTS: Overall, 37 experts participated in the discussions and three successive voting rounds (participation rate 89%). The panel confirmed the necessity of a re-evaluation of the guideline recommendations and recommended the introduction of a shift-related minimum quota of 30% of the full-time equivalent of nursing personnel on intensive care wards and the introduction of structured promotional programs for long-term elevation of the quota. CONCLUSION: In this national Delphi procedure with medical and nursing experts as well as representatives of patients, the fundamental benefits and needs of professional specialist qualifications in the field of intensive care medicine were confirmed. The corresponding minimum quota for specialist further training of intensive care nursing personnel should generally apply without limitations to specific groups. The expert panel stipulates a shift-related minimum quota for intensive care nursing personnel with specialist training of 30% of the nursing personnel on intensive care wards and the obligatory introduction of structured and transparent promotion programs for the long-term enhancement.

Acute Abdominal Pain as a Result of an Isolated Left Ovarian Vein Thrombosis.

Ovarian vein thrombosis (OVT) is a rare thromboembolic condition. It involves the right ovarian vein in 70-80% of cases. The risk factors for the development of OVT are pregnancy or puerperium, hormone therapy with estrogen, recent surgery or hospitalization, malignancy, pelvic inflammatory diseases, thrombophilia and idiopathic OVT. We present a rare case of left OVT in a young, non-pregnant woman in her 30 s. A high degree of suspicion is necessitated in patients with the triad of young-middle-aged female, pain abdomen in lower quadrant and hematuria to diagnose OVT. Contrast enhanced computer tomography (CT-venography) is the diagnostic modality of choice. The patient was initially treated with low molecular weight heparin and then switched to direct oral anticoagulants. At 6-monthsfollow-up the patient was free from any symptoms.

Dynamic Loading-A New Marker for Abdominal Aneurysm Growth?

The growing possibilities of non-invasive heart rate and blood pressure measurement with mobile devices allow vital data to be continuously collected and used to assess patients' health status. When it comes to the risk assessment of abdominal aortic aneurysms (AAA), the continuous tracking of blood pressure and heart rate could enable a more patient-specific approach. The use of a load function and an energy function, with continuous blood pressure, heart rate, and aneurysm stiffness as input parameters, can quantify dynamic load on AAA. We hypothesise that these load functions correlate with aneurysm growth and outline a possible study procedure in which the hypothesis could be tested for validity. Subsequently, uncertainty quantification of input quantities and derived quantities is performed.

[Care of vascular surgery patients during COVID-19: a Germany-wide survey]. / Versorgung gefäßchirurgischer Patienten während COVID-19: eine deutschlandweite Umfrage.

Background: COVID-19 resulted in postponement and cancellation of elective operations in all surgical disciplines worldwide, especially in the first weeks of the pandemic. The specific situation in vascular surgery clinics in Germany during this period has not yet been described. Objective: The purpose of the survey was to record the provision of vascular surgery services in the period from March 2020 to December 2020 as well as logistical and infrastructural changes that resulted from the pandemic situation. The focus of the survey was on mapping the supply situation as realistically as possible based on the assessment of the lead vascular surgeons. Material and methods: In cooperation with the German Society for Vascular Surgery and Vascular Medicine (DGG), the senior medical staff of all vascular centers in Germany were asked to take part in the survey. The questions were answered anonymously. Results: COVID-19 and corresponding measures resulted in relevant cancellations and postponements of operations, a loss of capacities and an increased workload. During the observational period there was a delay in the treatment of vascular surgical diseases and an increased occurrence of severe clinical stages compared to the corresponding period of the previous year. All levels of care were and continue to be affected. Discussion: In order to counteract the structural weakening and the restrictions in patient care, clinical processes, patient education and prioritization must be optimized. New concepts such as telemedicine and closer clinical control may make sense. A necessary infrastructure for emergency management (COVID) must not negatively affect the quality of care for (vascular) surgical patients in everyday life.

Manikins versus simulated patients in emergency medicine training: a comparative analysis.

PURPOSE: Every physician must be able to sufficiently master medical emergencies, especially in medical areas where emergencies occur frequently such as in the emergency room or emergency surgery. This contrasts with the observation that medical students and young residents often feel insufficiently prepared to handle medical emergencies. It is therefore necessary to train them in the treatment of emergency patients. The aim of this study is to analyze the influence of the assignment of manikin versus simulated patients during a training for undergraduate medical students on learning outcomes and the perceived realism. METHODS: The study had a prospective cross-over design and took place in a 3-day emergency medicine training for undergraduate medical students. Students completed three teaching units ('chest pain', 'impaired consciousness', 'dyspnea'), either with manikin or simulated patient. Using a questionnaire after each unit, overall impression, didactics, content, the quality of practical exercises, and the learning success were evaluated. The gained competences were measured in a 6-station objective structured clinical examination (OSCE) at the end of training. RESULTS: 126 students participated. Students rated simulated patients as significantly more realistic than manikins regarding the possibility to carry out examination techniques and taking medical history. 54.92% of the students would prefer to train with simulated patients in the future. Regarding the gained competences for 'chest pain' and 'impaired consciousness', students who trained with a manikin scored less in the OSCE station than the simulated patients-group. CONCLUSION: Simulated patients are rated more realistic than manikins and seem to be superior to manikins regarding gained competence.

[Monitoring Radiation Exposure During Surgery with Real Time Measurements: Opportunities and Limitations]. / Überwachung der Strahlenexposition im OP mit Echtzeitmessungen: Möglichkeiten und Grenzen.

BACKGROUND: In Germany, staff exposed to radiation is monitored with official individual dosimeters. Commercially available real-time dosimeters (RTD) can be used as radiation protection dosimeters. They are worn over the apron and display the radiation dose being measured at the desired location at intervals of one second. These real-time radiation exposure measurements enable the surgical staff to take suitable measures to reduce the radiation during the operation. The objective of our study was to monitor the accuracy of the measurements taken from the real-time dosimeter and to determine the radiation scatter for individual members of the surgical staff. MATERIALS AND METHODS: Prospective measurements of the operating team's exposure to radiation were carried out using a real-time dosimeter system in an operating room for vascular surgery equipped with a C-arm. Firstly the calibration of the RTD at the operating table was checked using a water phantom. Subsequently, measurements were taken during vascular interventions and surgery. RESULTS: When calibrated, the values of the individual RTD revealed internal significant deviations, thus a corrective factor was calculated for each RTD. In total 55 interventions on 53 patients were studied. The average dose for the RTD of the surgeon during endovascular aortic repair (n = 11) amounted to 9 ± 9 µSv (range 3.6 - 50 µSv) and during thoracic endovascular aortic repair (n = 6) 35 ± 49 µSv (3.8 - 190.3 µSv). In the case of percutaneous transluminal angioplasty of the pelvis and of the lower extremities (n = 20), the average dose for the RTD of the surgeon was 7 ± 7 µSv (1.2 - 35 µSv) and for the angiographies of the lower extremities (n = 12) at 2 ± 3 µSv (0.2 - 15.9 µSv). The real-time dosimetry provided data which contributed to the operating team changing their behaviour in the operating room. DISCUSSION: Since the dose values determined by the official dosimetry are generally very low, it is not possible to optimise the behaviour and thus the radiation protection using these dose values. This can be achieved with the radiation protection dosimeter and the dose reference levels can be defined in the new Radiation Protection Ordinance (StrlSchV). Instant feedback of the current dose rate at the place where the RTD is worn can lead to both the individual adjusting his or her personal behaviour and to optimisation of the individual's radiation protection. It is only possible to compare the measured data obtained with the RTD when calibration is carried out in advance.

[National Learning Objectives Catalogue in Surgery - General Part Defining Competences of Medical School Graduates in Surgery]. / Nationaler Kompetenzbasierter Lernzielkatalog Chirurgie ­ allgemeiner Teil mit fachbezogenen ärztlichen Handlungskompetenzen am Ende des Praktischen Jahres.

Competency-based medical education is needed in order to meet the requirements of medical care currently and in the future. The basis of this are activity-based learning objectives that are merged in competency-based catalogues. A basis for a core curriculum of undergraduate medical training is the National Catalogue of Learning Objectives for Undergraduate Medical Education (NKLM). Already in 2013, for surgery, the competencies which medical students should have achieved after completing the practical year (PJ) in relation to surgical diseases were defined in the special part of the National Catalogue of Learning Objectives in Surgery (NKLC). In the now amended general part of the NKLC, interdisciplinary competencies were defined and consented from all surgical disciplines, that are relevant for all surgical disciplines and that all representatives from the different surgical disciplines should incorporate in their surgical training. The complete NKLC is now available for faculties, teachers and students for trial (available online: https://www.dgch.de/index.php?id=190&L=528). The guiding principle for the entire development process was to make sure that students gain all competencies they need when starting to work as a medical doctor and therefor to increase patient safety.

[Position Paper of the Surgical Working Group for Teaching of the German Society of Surgery Regarding the "Master Plan 2020"]. / Positionspapier der chirurgischen Arbeitsgemeinschaft Lehre für die Deutsche Gesellschaft für Chirurgie zum "Masterplan Medizinstudium 2020".

The "Masterplan Medizinstudium 2020" from the German Federal Government should not be underestimated as only one among many announcement. Thus, the Surgical Working Group on Medical Education (CAL) of the German Association of Surgeons (DGCH) comments on the intended measures of the "Masterplan Medizinstudium 2020" and discusses the challenges, consequences and duties arising from the "Masterplan Medizinstudium 2020" for the representatives of the surgical societies and those engaged in surgical undergraduate training.

[Train-the-Trainer: Professionalisation of Didactics in Daily Clinical Routine - the Personal Perception of Clinical Teaching Staff with Respect to Didactic Competence and the Framework Conditions of Teaching]. / Train-the-Trainer: Professionalisierung der Lehre im klinischen Alltag ­ Selbsteinschätzung Lehrender zur didaktischen Kompetenz und den Rahmenbedingungen des Unterrichts.

BACKGROUND: Teaching training programs contribute to improving the quality of medical education. In a course of the Train-the-Trainer (TTT) concept of the Surgical Working Group for Teaching, teachers (TN) from different medical professions and career levels were taught together. AIM OF THE WORK: Assessments of teaching activities in everyday clinical practice of residents (AÄ), senior staff (OÄ) and nurses (KP), their perception of teaching obstacles and requirements to improve teaching. MATERIAL AND METHODS: Prior to the beginning of the course, biographical data, previous teaching experiences, teaching obstacles as well as their notions to improve teaching in the daily clinical routine were requested. Upon completion, the participants were asked to rate the course. The answers to the closed and open questions were evaluated quantitatively and qualitatively. RESULTS: From 2014 to 2017, six basic courses (TTT-A) were conducted at three locations. 97 participants participated in the surveys (AÄ n = 44, OÄ n = 19, KP n = 17). More than two-thirds declared previously acquired teaching knowledge. There were no significant differences between medical and nursing staff. While AÄ and KP primarily taught at the bedside, OÄ taught mainly in the context of lectures, electives and seminars. Only a small proportion of all occupational groups felt well prepared for teaching in everyday clinical practice. The main drawbacks were lack of time and staff, too many students per group and too little teaching knowledge. Nearly two-thirds of the AÄ found teaching in general as a strong or moderate burden, compared to about 50% of the OÄ and 60% KP. Aspirations for improvement of teaching included more precise characterisation of the learning objectives, greater appreciation of teaching as a whole, and regular measures to make teaching professional. DISCUSSION: Occupational group-related differences in everyday clinical practice and individual career progression, impact type, implementation and perception of the teaching activity. By focusing on learning objectives and essential teaching methods and examination formats relevant to teaching at the bedside, teacher training programs across professional groups can contribute to knowledge and expertise growth. Indications of a sustainable effect encourage the continuation and further development of the TTT concept.

Do they teach what they need to? An analysis of the impact of curriculum mapping on the learning objectives taught in a lecture series in surgery.

Introduction: Curriculum mapping shows concordances and differences between the intended and the taught curriculum. To our knowledge, no previous studies describe the effects that this mapping has on the curriculum. The aim of the present study is to map the content of a lecture series in surgery to the National Catalogue of Learning Objectives in Surgery and analyze the effects this mapping has on the content of the following lecture series. Methods: All lecturers in the lecture series were directly observed by a minimum of two reviewers and learning objectives and the level of competence were documented. After the lecture series, the results were visualized within the catalog of learning objectives and were sent to the lecturers. In the following lecture series, learning objectives were documented correspondingly. Results: In the first lecture series, 47% of the learning objectives were taught. After the mapping, the number of learning objectives that were taught increased to 59% (p < 0.001). The increase was found in all surgical disciplines and in all levels of competences without any changes in the average duration of the lectures. Conclusions: The presented method for mapping a curriculum effectively increased the number of taught learning objectives without requiring longer lecture durations.

[The Medical Examination - Between Desire and Reality - Analysis of Consensus Between the Second Part of the Medical Licensing Exam (IMPP) and the National Catalogue of Expertise-based Learning Goals in Surgery (NKLC)]. / Medizinische Prüfung zwischen Wunsch und Wirklichkeit ­ Analyse der Übereinstimmung zwischen dem 2. Abschnitt der ärztlichen Prüfung und dem Nationalen Kompetenzbasierten Lernzielkatalog Chirurgie.

Background The working party of the German Society for Surgery (DGCH) on undergraduate surgical education has developed a national expertise-based catalogue of learning goals in surgery (NKLC). This study analyses the extent to which the questions of the German second medical licensing examination compiled by the IMPP are congruent with the NKLC and which thematic focus is emphasised. Materials and Methods Firstly, a guideline and evaluation sheet were developed in order to achieve documentation of the individual examination questions of the second licensing examination with respect to the learning goals of the NKLC. In a retrospective analysis from autumn 2009 to autumn 2014, eleven licensing examinations in human medicine were screened independently by three different reviewers. In accordance with the guideline, the surgical questions were identified and subsequently matched to the learning goals of the NKLC. The analysis included the number of surgical learning goals as well as the number of surgical questions for each examination, learning goal, and different levels of expertise (LE). Results Thirteen reviewers from six surgical disciplines participated in the analysis. On average, reviewers agreed on the differentiation between surgical and non-surgical questions in 79.1% of all 3480 questions from 11 licensing examinations. For each examination (n = 320 questions), 98.8 ± 22.6 questions (min.: 69, max.: 150) were rated as surgical. For each surgical learning goal addressed, 2.2 ± 0.3 questions (min.: 1, max.: 16) were asked. For each examination, 23.5 ± 6.3 questions (min.: 11; max.: 31) referred to learning goals of LE 3, 52.5 ± 16.7 questions (min.: 34; max.: 94) addressed learning goals of LE 2 and 22.8 ± 7.7 questions (min.: 9; max.: 34) were related to learning goals of LE 1. 64 learning goals (27.8% of all learning goals of the NKLC) were not reflected in the examinations. With a total of 70 questions, the most frequently examined surgical topic was "disorders of the rheumatic spectrum". Conclusion The number of surgical examination questions in the German second medical licensing examination seems to be sufficient. However, the questions seem to be unevenly distributed between different surgical areas of undergraduate education. In order to achieve a more homogenous representation of relevant surgical topics, improved alignment is needed between the state examination with existing catalogues of learning goals by the IMPP.

The effect of written standardized feedback on the structure and quality of surgical lectures: A prospective cohort study.

BACKGROUND: Lectures remain an important teaching method to present and structure knowledge to many students concurrently. Adequate measures are necessary to maintain the quality of the lectures. The aim of this study was to determine the impact on the lecture quality using written structured feedback and to compare the ratings of surgical lectures between students and surgical peers. METHODS: Prospective analysis of two consecutive surgical lecture series for undergraduate students at Goethe-University Medical School was performed before and after evaluation of the lecturers via independent written feedback from trained undergraduate students and surgeons. The 22-item feedback instrument covered three areas of performance: content, visualization, and delivery. Additional suggestions for improvement were provided from both students and surgical peers who anonymously attended the lectures. The lecturers, experienced surgeons, as well as the student and peer raters were blinded in terms of the aim and content of the study. Their response to the feedback was collected using a web-based 13-item questionnaire. The Kendall's-W coefficient was computed to calculate inter-rater reliability (IRR). Differences between ratings before and after feedback were analyzed using Student's t-test for dependent samples. The Kolmogorov-Smirnov-test was used for independent samples. RESULTS: A total of 22 lectures from a possible 32 given by 13 lecturers were included and analyzed by at least three surgeons and two students. There were significant improvements in overall score as well as in the details of 9 of the 13 items were found. The average inter-rater reliability was 0.71. There were no differences in the ratings as a function of the rater's level of expertise (peers vs. students). We found that 13/23 lecturers (56.5%) answered the questionnaire, and 92% strongly agreed that the written feedback was useful. 76.9% of the lecturers revised their lecture based on the written feedback requiring on average 112.5 min (range from 20 to 300 min). CONCLUSIONS: Overall, this study indicates that structured written feedback provided by trained peers and students that is subsequently discussed by the lecturers concerned is a highly effective and efficient method to improve aspects of lecturing. We anticipate that structured written feedback by trained students that is discussed by the lecturers concerned will improve lecturing.

Elevated fluid shear stress enhances postocclusive collateral artery growth and gene expression in the pig hind limb.

OBJECTIVE: The role of fluid shear stress (FSS) in collateral vessel growth remains disputed and prospective in vivo experiments to test its morphogenic power are rare. Therefore, we studied the influence of FSS on arteriogenesis in a new model with extremely high levels of collateral flow and FSS in pig and rabbit hind limbs. METHODS AND RESULTS: A side-to-side anastomosis was created between the distal stump of one of the bilaterally occluded femoral arteries with the accompanying vein. This clamps the collateral reentry pressure at venous levels and increases collateral flow, which is directed to a large part into the venous system. This decreases circumferential wall stress and markedly increases FSS. One week after anastomosis, angiographic number and size of collaterals were significantly increased. Maximal collateral flow exceeded by 2.3-fold that obtained in the ligature-only hind limb. Capillary density increased in lower leg muscles. Immunohistochemistry revealed augmented proliferative activity of endothelial and smooth muscle cells. Intercellular adhesion molecule-1 and vascular cell adhesion molecule (VCAM)-1 were upregulated, and monocyte invasion was markedly increased. In 2-dimensional gels, actin-regulating cofilin1 and cofilin2, destrin, and transgelin2 showed the highest degree of differential regulation. CONCLUSIONS: High levels of FSS cause a strong arteriogenic response, reinstate cellular proliferation, stimulate cytoskeletal rearrangement, and normalize maximal conductance. FSS is the initiating molding force in arteriogenesis. The role of fluid shear stress on the development of a collateral circulation was studied by abruptly increasing collateral blood flow by a distal femoral artery-to-vein anastomosis. This increased number and size of collateral vessels to a hitherto unknown degree. Fluid shear stress is the primary and strongest arteriogenic stimulus.